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0. H. BASQUIN. WINDOW LIGHT.

Patented July 13, 1897.

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(No Model.)

@unum% 11ml UNITED STATES PATENT OFFICE.

CLIN II. HASQUIN, OF CIIICAGO, ILLINOIS, ASSIGNOR TO THE LUXFER PRISMPATENTS COMPANY, OF SAME PLACE.

WINDOW-LIG HT.

SPECIFICATION forming part of Letters Patent No. 586,211, dated July 13,1897.

Application filed March 8, 1897. Serial No. 626,384. NO model.)

T @ZZ uffi/07?@ t 'Hw/.U @wwf/VIL: prisms face in several differentdirections.

Be it known that I,OLIN I-I. BASQUIN, a citi- The position of the prismsor ribs will of zen of theIInited States, residing at Chicago, coursedepend upon the conditions to be met.

in the county of Cook and State ot Illinois, These prisms may, however,be so positioned 5 have invented certain new and useful Iinas to directthe light toward any given point.

provements in IVindow-Lights, of which the Hence the window, instead ofdilusing the following is a description. light in a haphazard manner, isconstructed My invention relates to light-diiiusing deafter a definiteplan, so as to direct the light vices for windows or the like, and hasfor its toward definite points. 6o

io object to provide a new and improved light In Fig. 2 I have shown theportion of a windi'ttusing device for this purpose. dow provided with aseries of sections C oi I have' illustrated my invention in theacordinary prismatic glass, the sections being companying drawings,wherein set upon end, as it were, and so positioned Figure l is a viewof a section of a window that the prisms face in several different di-15 embodying my invention. Fig. 2 is a similar rections, therebythrowing the light toward view showing a somewhat modied form. differentparts of the room. Fig. 3 is a section of glass, showing a further InFig. 3 I have shown a section of glass modiiied form of my device. Fig.4c is a secprovided with a series of prismatic sections tion on line 4 4of Fig. S. D, such sections being formed so as to pro- 7o zo Likeletters refer to like parts throughout ject the light in severaldiiterent directions. the several figures. The section D', for example,projects the IVhen ordinary prismatic glass is used in light in onedirection, while the section D2 windows, the light striking the windowis throws the light in another direction. These changed in direction andis projected toward sections are formed after a definite plan, so

2 5 the rear ot the room and greatly increases the as to throw the lightin certain given definite illumination of such room. I have found,directions. however, that under some conditions-as, for Of course I donot wish to be understood example, where the light can only be receivedAas indicating that I have shown all of the arthrough narrow openings onaccount of buildrangements of such prisms as might be made 8o 3o ings orthe like opposite a window-the illuto accomplish the desired result.

minating effect produced by the use of the Briefly stated, my inventionis essentially ordinary prismatic glass is very much reas follows: IVhenthe prism window-light, duced. When the construction herein shown havingprisms thereon systematically aris used, the light is more thoroughlydiffused ranged to increase the illumination of the 3 5 throughout theroom, such light being thrown apartment, is applied to a window, such inseveral different directions instead ot' beprisms, as ordinarilyarranged heretofore, ing projected straight forward, as is the casethrow the light directly back into the room, when the ordinary prismaticglass is used. and Athus concentrate the light in certain I haveillustrated several forms oi glass parts of the room. Now tosecureacompara- 9o 4o embodying my invention in order to more tivelyeven distribution of such light it is clearly illustrate its use, but itis of course necessary to set the prisms which go to make evident thatother forms than those shown up such prismplate angularly with referencemay be used to produce the desired result, to each other or to tiltthem.- By this means and I of course do not wish to be limited to thelight can be distributed as desired, some 4 5 the construction shown.being sent directly back into the room, some In Fig. l I have shown theportion A of a of the light being thrown on one side of the windowprovided with a series of sections B course of such direct light, andsome light oi glass, such sections being provided with being thrown onthe other side. projecting ribs or prisms. These sections, as I clainimroo 5o shown in Fig. l, are hexagonal in shape and A prismplate for awindow, consisting of are so positioned that the projecting ribs oraseries of individual prisnrlightsach prismlight having onone side areceivingsurfacc and on the other a prism-surface comprising a series ofprisms systematically arranged to produce an increased illuminatingeffect, and a frame whereby all of these prism-lights are attachedtogether to produce a prism-plate, the individual prism-lights tilted orinclined in their positions in the plate so as to set the prisms atangles to each other to throw the light from any part of the completedplate in 1o any desired direction, substantially as shown and described.

OLIN ll. BASQUIN. Witnesses:

DONALD M. CARTER, LILLEY W. JoHNsToNE.

